Recording device for looms



Dec. 11, 1934. O v. PAYNE 1,983,872

RECORDING DEVICE FOR LOOMS Filed on. so, 1930 s Sheets-Sheet 1 A 77DFPNEY5 Dec. 11, 1934. o. v. PAYNE RECORDING DEVICE FOR LOOMS Filed Oct. 30, 1930 5 Sheets-Sheet 2 Dec. 11, 1934. o. v. PAYNE RECORDING DEVICE FOR LOOMS Filed Oct. 30, 1950 3 Sheets-Sheet 3 A 77'UPNE Y5 X -//Aq L M@ I, Ma Q LN Patented Dec. 11, 1934 UNI TEiD'1i-5STATES BATEN .OF FlCE saeeaemessweeso eone V lscarlt'. Paynef' Worcester, Mass, :assignor to Oromptn'-&.. Knowles Loom Works, W0rcester, I Mass., a corporationof Massachusetts I 5 f dpplicationflctohoi' at, 1950', Serial No; 492,257-

Le.-'e1;ims..(e1..; 1

invention relates td a, device adapted to receive a clock spring 27. The outer end of to record certain ,dataflrelativeto the operation the spring 2'7 is secured at 28 to the flange 26 of a1oom., if, andthe innerend of the spring 27 is secured )[It is the general otjeet of fthe-finv'ention ,to to a stud SO in the supporting shaft 22.

. provideadev'ice'whiclf'willgive.agraphicindi ,A hand wheel 31 is secured to one end of cation of the "regularity" or" irregularity .ofa the shaft 22 and constitutes means-,by which the '5 selectedloom operation,.-such as the movement shaft may be turnedtowind up the spring 27. oflthe' warpjgbeam .injletting ofi. orjfee'ding warp A ratchet wheel 33 is fixed to the shaft 22 and threads'to'jthe 1eom'na15nesses'; Us; is engaged by a pawl 34 (Fig. 2), mounted on a A' further object of'ithe' invention is to provide fixedpivot stud 35 (Fig. 3) and provided with a a device in which back ilash is substantially coil; spring 36 by which the pawl is caused to eliminated, and -.which directly responsive to yieldingly engage the ratchetwheel. reproduce themovements'fof a warp beam or ;With the construction described, if the drum otherlo'om parto'n ,an enlarged scale and to 20 isheld from rotation, the spring 27 may be provide, a perma en ireeora thereof. a wound up'to any desired extent and may be ff My inventionjfurther elatesto arrangement held intensioned condition by the pawl 34.

and combinations Ufpaits 'whichwill be here- ,The hub 21 of the drum is preferably proina'fter' described and more particularly pointed vided with a fine pitch, spiral groove or thread out in the appended claims. U o 38 to receive a fine wire 40, such as -a'piano A preferred form'bf the invention is shown wire. One end of the wire 40 is secured to a inthe drawings, in which v o screw 41 in the hub 21 and the other end of the Figure '1 is a sideelevation of parts of ,a wire is wrapped one or more times around a loom showing my recording device applied drum portion of the warp .beam 12 and is setheretof oured-toablock 42 (Fig. ,1), which is clamped Fig. 2 isya side:v elevation of the recording to,the rim of the beam;12. device onanenlarg'ed scalej The spring 2'? acts in such a direction as to Fig. 31 is 'a' sectional front elevation, taken tension the wire 40 and to rotate the drum 20 along the line 3-3 in' Fig. 2; in unison with the movements of the beam 12. Fig. 4 is a planf-v'iewflof the device; 1 The ratio of diameters of the beam 12, the hub fjFig. '5 is a detail sectional side elevation,taken 2l-and the drum 20 are such, however, that the along the lined-.5 'ihjFig. ,4; and movement of; the periphery of the drum 20 is Fig. '6 is a detail'sectional view/taken along several times enlarged over the movement of the line 66,in Fig.4, thebeam-12.

Referring to Fig. ,1 ,'I]hae shown .my recording ,It will be noted that the spring 27 holds the device as, mounted upon a bracket .10 secured wire40 under continual tension and that conto a portion of agioom =side 11.",I-have also sequently there is no substantial back-lash or shown a warp beam 12'which maybe provided lostn otion between the movements of the beam with any ordinary let-ofi device such as the 12 and -the drum 20. common rope 'friction let-off laindicated in A roll of tape 50 of paper or other suitable Fig. 1. The loom is also provided with the material is mounted on a stud 51 (Fig. 2) in usual crank-shaft 14 and handwheel 15 The the side of a support 53, which in turn is warp threads W are indicated as extending formounted on the base 25. The tape 50 is proward from the warp b eam '12 t the harn ss s, vided with perforations 52 along its opposite not shown. H edges, which perforations register with studs Yi P -IGQ I lE sdQ mpri e a or projections 54 on the outer surface of the 45 drum .20, preferably .formed of,-aluminum or drum 20. other v ry light a ria t c -ine tiase- A spring '55 is clamped to the base 25 below cured to a hub '21 whiohis loosely rotatableon the drum 20 and one end 56'of the spring exa ppo tin sha 22- 1' ha Zza-iamunted tends' rearward to engage the roll of ta eeo 5g in bea n s 23 1 2 011a base 25ijwhich'in and act'as a brake thereon. The other end 5'? turnis supported .n;;the bracketlO; previously is curved upward to engage the face of the drum e ed d'm v be djustedrthereomtrans- 20ar'id'act as a stripper to separate the tape 50 versely -therl o r w therefrom after it has'passed the recording in- ;-The dru 1 n i0 is; provided-with an annular strumentfto be described. fiange 26 genclQSi g arecessnnchambenadapted -Z'A =pressureplate 58 is mounted at the outer 5- end of a spring plate 59 secured to a frame member 60 which is mounted at the top of the support 53. The pressure plate 58 holds the tape 50 firmly and smoothly in contact with the drum 20 at the recording point. The plate 58 is provided with slots 61 for the studs 54 and also with an opening 62 for the recording instrument.

This recording instrurnent mayicomprise a pen 7O clampedimia'n'f arm- 71, which arrnis pivoted at '72 to an arm portion 73 which in turn is pivoted to the frame member 60 by a stud '74.

The arm '71 and arm portion,,7,3,,are provided with upwardly extending lugs '75having'pockets on their adjacent faces to; fiCBj-Vfiiifl spring 16 by which the arm 71 is forcednownward against. a cross bar (Fig. 4). The cross bar alfl is' mounted on pivot studs szandis ofnon-circular; cross section. The bar 80 is also provided with a-Lhandle 83 by which it may be moved upon its pivots. When the handle' B3 is raised the bar- 80' is turned to lift the pen 70 away fro'm the tape 50 so 'th'at no record is made.- 'Whnthe bar "83 1s turned to the position 'shown in Figsi'Z andl, the bar 80 is lowered so that the pen 70 can engage the nil tape and inake a record;

The arm '71 isnormallypushed to one-side by' a spring *(Fi'g. 4') untilit engages a'n ad justable stop screw 911 When in this position,- the arm 71 preferably rests ona 'raisedportion- 92 of the cross bar 80, in which position thepen 70 is out of contact withthe tape 50. v j T A wire or cord 93 is connected at one end to a stud 94 on the arm 'ZI and'th'e other end of the connection 93 is secured to "astud 95 eccen-' trically mounted near the axis of the hand wheel 15. The intermediate p'ortion of the connection 93 passesaround suitable guidingmembers 96:

Each revolution of the' crank-shaft 14 causes the stud 95 topull'the wire -=or-connection 93 and jerk the pen"70 sideWise--'Preferab1y slack is provided in the connection 93 so-that this jerk or pull occurs abruptly at one point in the ro tation of the crank-shaft. Such apull-or jerk causes the pen 70 to make a marktransversely of the tape 50 and these marks are made-at equally timed intervals with respect to the operation of the loom in-accordance with the rate of rotation of the crank-shaft'M.

At the same time, the longitudinal movement of the tape 50 corresponds to themovementsofthe warp beam '12, so that arecord is produced showing the advance of the warp for each'equally timed transverse movement of the pen '7 0. The regularity or irregularity of the spaces between these transverse marks on the recordindicates the regularity or lack-0f regularity in the amount of Warp let-off for each pick of the loom.

In many looms there. is a very substantial swinging of the warp beam'back and forth .in addition to the actual let-off movement and frequently the swinging movement is of substantially greater extentthan the let-off movement. This would result in dragging the pen back and forth along a longitudinal line .on the paper if it were not for-the. raised or cam portion 92 on the cross bar 80, which raises the pen from the paper whenit is against thestop 91- and lowers the pen only during its trans-- verse movement. Otherwiseit is found that the continued swinging movement of the drum by the Warp beam may cause the pen to perfor=-. ate the paper and thus injure the record; ,From-the above descriptionof. my improved eresaata as to many other loom operations or for 1. In a device for recording movement of a machin' part and comprising a pivotally mounted dr 1 1m with a record strip thereon and a marking member engaging saidrecord lstrip on said'drum,-in' combination'a spring tdmove said drum and strip in onedirection, and ar'etarding' connection between's'aid drum andisaid machine part restraining spring-actuated movement. of eidf lm q 2fiThef-Ycombination in a recording device as set'forth in "claim 1, in which the retarding connection is a, fine flexible member and in which thedrum hasan axially extended hub on which said fl'exible member:may be wound. j3;The -c mbinationin a recordingdevice'as' set gram; f n claim "1 in which the retarding conn'ction i sfa fine fiexible'memberand in which? the drum has a n axially extended hub on which saidffieitiblemember may" bewound, said hub having'a fine pitch spiral groove to receive said flexiblem en'ib'er. V 1 V 4. In a device for recording movement of a machine part andcomprising a pivotally mounted drum with a record strip thereon .and a markingfr'nember engaging said record strip on said drum, *in combination a spring to move said and strip in one direction, and a retarding connection between said :drum and said machine part restraining spring-actuated move-' ment of said drum, the movement of said drum being therebyv associated with the movement of the machine part, and said connection being effective tocause the movement of the drum to be substantially magnified .over the movement of the machine part.

Y 5, In a device for recording movement of a machine part in combination, a record sheet, meansto move said sheet in one direction in predetermined and definite relation to the movement of said machine part and underthe control thereof, whereby a given movementjof said record sheet corresponds to a definite .associated movement of said machinepart, a mark ing member,-means to give saidmarking meme berintermittent movements in adirection trans; verse to said *first movement but in theplane of said sheet, and means to lift said marking mem ber from'the record sheet as it approaches its position efrest at' one end of its transverse movement' and to maintain said member in raised position between marking movements. firiln a device for recording movement of a machine part, incombination, arecord sheet, means to move said-sheetfin one direction in predetermined and definite relation to the movement of said machine part and-under thecon' tro'luthereof; whereby a given movement of said recnrdjsheetmarresponds-to a definite'associated movement of said machine part, a. marking member, means to give said marking member intermittent marking and return movements in a direction transverse to said first movement 5 but in the plane of said sheet and in predetermined timed relation, and automatic means to maintain said marking member out of contact with said record sheet during return movement of said member, whereby wear of the marking member and record sheet is greatly reduced.

OSCAR V. PAYNE. 

